Mandrel for winding coils.



APPUCATKOH HLED SEPT. 5, i912,

Patented Jan. H, 1916.

she Bevel eenin be se keken e. s @am @it where:

n Figure is View Le sufi eevates of s ade mvenblon. Flg. 2

' meme shewn 31 Fie'. i; Fig. 3 ls s View eea'en e?? she 'e beexs use in Sion W'h e meme shows '1u 1g. is demiview is ssete ef whine?. guide eonnece; with the @inasde in l se 3 nclue..

q'esgna'ses s wnlg spilde W'lels me? 'se effen in any sait-ebbe masse?, and Whisk has e heaed en@ este which me mlb 29 ef IangeA plaie 30 is iieadeffes deaxly indese Fig. 2 of' The dlswlgs, seid en 30 having fee/ess Si', et its een wel petion Theade the mlb 29, in eiemen with, *che spinle s s. eine A which is cegc's in sha-pe? se bese cene being leesed Wihia he recess l in he end pate, smi the eppesi'ge enl of awe core-niece having a theede shank 3% receiveA an outer en pee which is id in plassex; she cere-piece by e @si 35. ysnged es the eonca perfen of she cegeece between *ne emi pses, s s phlza ele boeks 35, neem es @sieg ieu? m Aie give the desed number; 1115i essie pevded with an acle. inner, cuve suzaee 3? te rest 011 the curved sulface ei the come. The @ler-blocks, in the embement suown, are each efmed wh oue suzfaces 38 at right angles te each othej and arrangement is' such when *alle mazde is sssembe, the mees 38 ei the ke-beeks aline o'pfevie a suestentmiy reetmglsr body to "receive sums ef the magee Wding, she co1'- En 2 one of bhe le' blocks is shown detachee@ seeue che inner end pisse 3G by aboli.' se slaat said bloei; celstues a 'bracket e' the sliepen o1? the winding whey@ the en plete is 'egoved.l The maier f ange pe 34a :is prevef en its inne? face, er that rectef" towa'd he Winding space ef the meudre, Wl s. Tecess 34 whieh eeeves and hols she outer ends ef the Goes-pieces 36. wl se'note that the @Lef-blocks at ves ch and have projeclons 36? te be seated m the ecesses of the angs pistes :md that the reeelvmg aee-s se or beyond the wes of 1die recesses, es deary mdlcste m Flg, l ei the rawmgs. By this eengement the end fianges mami-sini the @ier-blocks in proper position winding.

An important eaure of this invention consists in providing the mandrel Whether it is designed te make mami windings G'r polysided Wnngs, with means whereby the tunis of the ayes constituting @winding5 will be arranged 'm regular form so that, stemae ayes are counerparts of each ehe throughout the estira Winding, the res, being that provide a eempleted azsce which is much mere comps-ct fer gve; Weight of Wire than any Windmg which has been predueed heretofore, as far as am aware, ami which n'otony makes s wnng which is much more compst, bu feslilts is a great saving el? `Wire, whlch, ox cmuse, in copper fnc'mgs 1s importent. n-

conformation to the order to arrive' at this result',my invention broadly contemplates the provision of thel mandrel with means whereby-the first layer of the winding is laid between thelianges of the mandrel with great precision, this winding serving then as a guide for the next layer and so on throughout the article produced. I have, up to the presenttime, contemplated and demonstrated the usefulness of several means for accomplishing this resultand I will noiv proceed to describe one of the same shown-in the'accompanying drawings.'

Before proceeding with a detail description, I believe the method will be better understood if it -is borne in mindthat the procedure is-based on the fact that the distance from the flange plate of any wire which is the nearestone of its layer to the plate must be either zero or one-half the diameter of the strand, in order that the arrangement of strands in layers will be such that. -it is repeated as layer after layer is i' wound on the core.- In oi'der to accomplish this resultI employ a device ,which makes thefirst turn take a determined course, so

` that the subsequent turns, when laid against the same, will take a corresponding course across the face of the mandrel. In the present embodiment of the invention I employ a guide or projection secured to the mandrel and extending beyond thereceiving face thereof, a distance equalto the diameter ofl the wire and of a thicknessequal to orie- 74, so that .it practically constitutes, in effect, a half strand'of Wire laid against the -end plate. The flange or head 72, pro']'ects half the diameter ofthe wire, said device being arranged flush against one of 4the end plates.'v This'device may take a number of forms but I prefer toemploy a pin seated vina recess 71, in the end of two of the adjacent filler blocks, Isaid recesses being located at the corners of the blocks and said pin having an enlarged head 72 which abuts the end plate 34, and projectsbeyond the face of the mandrel between the end plates, said head yhavingy a rounded surface as at beyond the receiving surface of themaiidrel a. distance 'substantially equal to the dlameter of the wire bein Wound, and is of such Athickness that its inner face, or the facie,

away from the head of the mandrel, takes.

position away from said head a distancel equal to one-half the diameter of the wire being wound. AVlhen thewireis then wound on the mandrel, it will be held away from the end plate a distance equal to one-half fits diameter by the projecting head of this pin, at two of the corners of the mandrel, but will lay vagainst the end plate at the other corners of the mandrel. As' the coil .is wound, all of the succeeding turns of the first layer will' be correspondingly laid 'and the turns of the second laye-r will be guided by the turns of the first layer, the final turn resting in 'thegroove formed by the head 74, and the next adjacent turn of the lirstl layer, 75, the head 74 preventing the next to last turn of the second layer from forcing the end turn of the irst layer away from."

The illerblocksl for the mandrel may each be formed with a longitudinal rabbet 76, which when theyvare assembled coincide `to form grooves longitudinally of vthe man- It willibe understoodithat interchange- I dre'l through which-'bindingstrips may be passed between the Winding and the 'mandrel. .l

lVhat I claim and desire to secure -b United States Letters Patent is:

1. A winding mandrel comprising'a receiving body provided with end ilanges and having means to cause the turns of a layer to lie parallel with the direction of rotationv over a determined area of the mandrel, and

oblique to thedirection of rotation throughanother area of the mandrel, said means comprising guiding devices spaced from each other about the mandrel and located at :the juncture 0f all end flange with the body,

said guidingdevices projectinginward from the flange equal distances and formed to permit the endmost turn of' a subsequentlayer to takeposition against an end flange.'

2. A winding mandrel, an end flangeor; head therefor, and a guiding deii'ce located V at the angle between the' receiving surface ion of the mandrel andjthe flange, said device projecting outward beyond the receiving 4surface a distance substantially equalv tothe diameter .of the wire and having a guiding lface, and said 'device projectingv from'the i head lengthwise of Nthe mandrel a distance substantially equal to oneflialf the diameter I of the wire.' .Y 3. A winding mandrel comprising a polysided receivingl body .provided with end flanges and having means to cause the turns of a layer to lie parallel with th'e .direction .of-rotation over av determined areaof. the

mandrel and oblique tothe direction'of ro tation through anoth'erarea o f the mandrel,

said meanscomprising guiding devices vspaced from each other about 'the mandrel and located respectively at the meeting points of sides thereof and at the juncture of an end flange with the body, said guiding convexly curved face adapted to form with an adjacent strand a guide groove for a turn iss mandrel, and means on the mandrel for guiding the initial coil laid on the mandrel ,away from said head, said means having a equal" zo @n 01 a Supa-nosed iayei', ami bei, Huit he iiimost ui'n of he sai s A layer muy mi@ position against the head.

5. L winding mandi-ei having :i'socket iii-v proie i g beyond the ceiviiig *is miidre. winding mandre having n sachet in i thereof, a guiding device C011- sisting of socket anfm pmt extending aie'iaiiy imm the pin :and pi'oiecfzing beyond the rceiving iie man@ and a mend for the mandi L Szii head melf ng the guiding device in Div ye 7. A imm-1rd an end flange Gr head haieifar, and; n guiding devise located ai: the angie he receiving surface. of the 1 izmge, said dei'ce substantiiiij; 2:0 im@ diamei ci a srai and ieiigti e @i the mandei a iistance subst-5?* :diy @quai o @ne-half the diameter ips strand., and havingva guiding face az'iid t@ form with an adjacent strand a groove for a tum of a superposed ayei', so formed that die endings?,

turn or' 'ille said subsquiant "layer may take.

position against 'the head.

S. Wiiing mandei having a recess in the emi facs eres?, and a stiarid guiding pin removal; iii said recess a i h mg a head p1 C ing iaemiy be eceiing sui'mce of che mandrel, an ila cfmsitiut, Tvfi im adjzicfsn't sirmi groom for nesed siyei.

9. A Wigifin having sent@ iii Y iii fue e' sl'u'face. ci' the. two af'ffaeeiu @ail d piatg hayon i a: dista iibsani' `maia? of wi; from the nd un 'm one-ri be Wound, the rem surface of iii@ man' obsriicffied.

i2. windiig inandife sided body soiiipnse of a. pi: bocks of which has a :i Comer of iii@ mancirei, hem dreii and 2i strand gui ing die@ iu each of tivo aiijcent c-oiiia zei, and udicent one of iie i vices pmjecting radinly im surface ai iii@ mandei a, disilm 3 iiizieiy equai io Je diameqy zo be 'weim and projacinff the izuuiiai Emily rom he ii zipproximiiiey t@ mie-Y '1 0i? said simmi, 

